The researcher now gets more accurate results by utilizing our unique-to-themarket, adjustable height feature. This feature provides a more accurate reading by keeping samples on the base of the chamber, at the same distance from the bulbs as the fixed UV sensor, instead of building up samples to get them closer to the bulbs. Just simply adjust the bulbs to get them closer to your sample! Our microprocessor detects the exact energy of the bulbs and compensates accordingly.